Speaker
Prof.
Nikolay Kalashnikov
(National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), Moscow, Russia)
Description
It is well known that the energy and momentum conservation laws forbid positron-electron annihilation, producing the single photon only. It can produce two photons in vacuum, or the process is possible with a participation of the third body.
The situation can be essentially changed in a single crystal when one or the both leptons are moving in the channeling regime when the transverse motion of a particle is bound. It appears the possibility of the single photon positron-electron annihilation process, described by the Feynman diagram with the single vertex only. In this report we analyze the different configurations of the single photon positron-electron annihilation process when one or the both leptons are in channeling regime and outline the conditions when the one-photon process may be a source of the high energy gamma-radiation.
Primary author
Prof.
Nikolay Kalashnikov
(National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), Moscow, Russia)
Co-author
Dr
Andrei Olchak
(National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), Moscow, Russia)
